Useful!

I know that people use my Web site, because I get a modest but consistent stream of e-mail from visitors. But do people read this blog? At least one person does! I made it possible to click on “useful” or “interesting” below the posts, and someone clicked on “useful” within hours of my previous post. I guess I’ll keep the blog going! (Though now that I’m back to teaching, the posts will become less frequent.)